Erythroblastosis fetalis wata cuta ce ta likitanci inda jajayen kwayoyin halitta masu tasowa ke lalacewa ta hanyar rigakafi da tsarin rigakafi na uwa ke samarwa. Wannan yanayin kuma ana kiransa da cutar hemolytic na jarirai (HDN). Yana iya faruwa a lokacin da uwa da tayin suna da nau'in jini daban-daban, kuma tsarin rigakafi na uwa ya gane jinin tayin a matsayin baƙon kuma yana samar da kwayoyin rigakafi a kansa. Lalacewar kwayoyin jajayen jinin tayi na iya haifar da anemia, jaundice, da kuma a lokuta masu tsanani, lalacewar kwakwalwa ko mutuwa. Magani na iya haɗawa da ƙarin jini, phototherapy, ko ƙarin ƙarin jini na ciki.